package jdbc;

import javax.xml.transform.Result;
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.Scanner;

public class JDBCDemo9 {
    public static void main(String[] args) {
        System.out.println("欢迎登录");
        Scanner scan = new Scanner(System.in);
        System.out.println("请输入用户名:");
        String username = scan.next();
        System.out.println("请输入密码:");
        String password = scan.next();
        try(Connection connection=DBUtil.getConnection()){
            String sql="SELECT id,username,password,nickname,age\n" +
                    "FROM userinfo\n" +
                    "WHERE username=? AND password=?";
            PreparedStatement ps = connection.prepareStatement(sql);
            ps.setString(1,username);
            ps.setString(2,password);
            ResultSet rs=ps.executeQuery();
            if(rs.next()){
                System.out.println("登录成功");
            }else{
                System.out.println("登录失败");
            }
        }catch(SQLException e){
            e.printStackTrace();
        }
    }
}
